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Functional performance of a vertical-shaft centrifugal palm nut cracker

Author

Listed:
  • M.C. Ndukwu

    (Department of Agricultural Engineering, Michael Okpara University of Agriculture, Umuahia, Nigeria)

  • S.N. Asoegwu

    (Department of Agricultural Engineering, Federal University of Technology, Owerri, Nigeria)

Abstract

A vertical-shaft centrifugal palm nut cracker was presented and evaluated. The cracker efficiency and kernel breakage ratio are some of the most important parameters for evaluating the cracker performance. From the result of this work, the two parameters are function of cracking speed, moisture content and feed rate. The result showed that for the lowest speed of 1,650 r/min, and the highest feed rate of 880 kg/h and for all moisture contents, the cracking efficiency was not up to 65%, therefore the efficiency increases with an increase in machine speed and a decrease in feed rate. The kernel breakage ratio ranged from 0-0.18 (0-18%) for all feed rates and moisture contents. It increased with moisture content and cracking speed, but decreased with feed rate. All the parameters determined have a linear relationship with moisture content.

Suggested Citation

  • M.C. Ndukwu & S.N. Asoegwu, 2010. "Functional performance of a vertical-shaft centrifugal palm nut cracker," Research in Agricultural Engineering, Czech Academy of Agricultural Sciences, vol. 56(2), pages 77-83.
    • Handle: RePEc:caa:jnlrae:v:56:y:2010:i:2:id:28-2009-rae
    DOI: 10.17221/28/2009-RAE
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    Cited by:

    1. M.C. Ndukwu & S.N. Asoegwu, 2011. "A mathematical model for predicting the cracking efficiency of vertical-shaft centrifugal palm nut cracker," Research in Agricultural Engineering, Czech Academy of Agricultural Sciences, vol. 57(3), pages 110-115.

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